三维地震资料在喀拉海陆架地质灾害识别与填图中的应用

A. Roslyakov, M. Tokarev, Y. Terekhina, A. Pirogova, N. Rybin
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引用次数: 0

摘要

减轻与地质灾害相关的钻井风险是海上现场调查的首要任务。就近地表地质灾害而言,海上勘探最具挑战性的区域之一是北极西部大陆架。该地区近地表复杂,存在水下残余多年冻土、冻土内和冻土下气盖、坪状构造和各种低温变形。本文介绍了我们利用在俄罗斯北极地区不同频率范围内获得的三维地震数据对浅海地质灾害(包括永久冻土)进行制图和表征的经验。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Application of 3D Seismic Data for Identification and Mapping of Geological Hazards on The Shelf of The Kara Sea
Summary Mitigation of drilling risks associated with geological hazards is a priority task of the site survey offshore investigations. One of the most challenging regions for offshore exploration in terms of near-surface geological hazards is the western Artic shelf. In this region, the near-surface is complicated by presence of subaqueous relict permafrost, intrapermafrost and subpermafrost gas caps, pingo-like structures and various cryogenic deformations. The paper presents our experience of mapping and characterization of the shallow offshore geohazards (including permafrost) using 3D seismic data acquired in different frequency ranges in the Russian Arctic.
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